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Product details
This red D154 has a small 1.98-square-inch piston area from two equal 1.12-inch stainless bores. It is the nominal 1.04-inch rotor-width version of the GM metric floating design. Wilwood Engineering is a Camarillo, California-based designer and manufacturer of disc brake systems, founded by Bill Wood in 1977. Calipers, brake rotors, master cylinders, valves, fittings and brake lines form its range for motorsport, street-performance and specialized applications.
Technical Details
- Manufacturer part number: 120-11874-RD. Component: D154 Single & Dual Piston Floater caliper.
- Supply: one brake caliper, not a complete axle brake kit. Match the mating rotor, pads, bracket and connection hardware to the installation.
- 5.46-inch floating mounting pattern, universal; mounting height 0.37 inches and hole size 0.69 inch.
- Hydraulic inlet thread: M10 x 1.50. Use a fitting with the correct thread and sealing seat.
- Red powder coat finish on a forged aluminum caliper body.
- The rotor channel is specified for 1.04-inch nominal width. Rotor outside diameter: 11.00 to 12.19 inches. Specified rotor-width limits: 0.87–1.04 inch.
- 2 stainless steel pistons with 1.12-inch bore diameter. The specified effective area is 1.98 sq in.
- Piston dust boots: not fitted.
- Caliper weight: approximately 4.6 lb.
- Brake pad profile D154; select friction material for the actual operating conditions.
Fitment & Compatibility
Check piston sizing before replacing a single-piston or larger twin-piston D154. Match the 5.46-inch bracket and original-style pads to the rotor, with the line sealed at its specified metric inlet.
PMB Performance has worked with brake components for over 20 years. Share the required piston sizing, rotor measurements and bracket drawing for help checking the match.
